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Figures of circular arcs

Stift.gif   Task

Determine the surface area A and the perimeter U of this figure.
The blue dots respectively mark the center of a circle.


bitte warten

bitte warten

Information icon.svg Note

Click inside the bright gray box. It turns turquoise. Enter your solution.

You may also use the menu, which is available via rightclick.

Complete your input with the RETURN-key. Green: right. Orange: wrong

See also: Using the Formel-Applet

Information icon.svg Solution

A=  1/2*a²    (Select the red area to see the solution)

U=  π*a    (Select the red area to see the solution)